Niche systems that does not affect inter-operability with the Americans and with low logistic footprints would be areas of consideration. Sniper rifles, RPGs, trucks would fit this category.
To expand on my previous points, I would put down the criteria of
high impact, low footprint for the wary, first time Russian equipment buyer. What is
high impact, low footprint? It simply means the introduction of an capability that represents a technological/capability leap over what's in service, but at the same time, carries manageable support requirements and operational changes. Here are some examples:
1. MANPADS Russian MANPADS will be a step-up capability compared to the guns only, MK1 eyeball guided AAA kit that has been trotted out for parades and APEC/ASEAN meetings. Their capability (9K38 Igla or the newest 9K333 Verbets) are a match for anything the West has and even Singapore fields the Igla. The logistic footprint is also manageable, with the basics being just the launch tube and the missile. A more complete solution would be to obtain a launch platform similar to the Strelets launcher or the Djigit launcher. Further investments could be make to obtain the trainer system but that could be optional.
[Igla]http://www.kbm.ru/en/production/pzrk/361.html
[launcher options]http://www.kbm.ru/en/production/pzrk/pupzrk/
[trainer]http://www.kbm.ru/en/production/exercise-machines/in-complexes/464.html
2. Anti-tank missiles
Anti-tank missiles would represent a new capability for AFP. While it would be expensive and foolhardy to use it to deal with local terrorists, the introduction of an ATGM capability would present a clear threat to conventional adversary. Again, Russian systems have a good reputation in recent years in Iraq and Syria and its logistic footprint is manageable.
[kornet-e]http://www.kbptula.ru/en/productions/antitank-guided-weapon/kornet-e
[kornet-em]http://www.kbptula.ru/en/productions/antitank-guided-weapon/kornet-em/automatic-launcher-on-carriers
3. Precision guided artillery
Precision guided artillery were first introduced in the 1980s by Western armies as way to transform conventional artillery into potential anti-tank platforms with systems such as the laser guided M712 Copperhead, to now GPS, sensor fuzed systems like the BONUS/SMart. These act as force-multipliers that increase the firepower options of PA in dealing with conventional and unconventional threats.
Russian Krasnopol laser guided shells are compatible with NATO standard 155mm tubes used by PA. Other than the rounds themselves, the only logistics requirements are likely to be testing equipment and laser designation for the forward observer.
[krasnopol-M2]http://www.kbptula.ru/en/productions/artillery-guided-weapon-systems/krasnopol-m2
[malakhit laser designator]http://www.kbptula.ru/index.php/en/productions/artillery-guided-weapon-systems/malakhit
4. (Vehicle) PTS I'm not for the sexy things like tanks. Rather the Russians have some unique kit which are one of a kind in the world and one of them is the Plavayushchij Transportyer - Sryednyj or the PTS. Why this? It's 12 ton payload and amphibious capabilities means it is one vehicle / landing craft hybrid that can have a impact both in a military sense and improving HADR responses. Being primarily mechanical, the logistic requirements would likely be manageable as well.
[PTS-4]http://www.military-today.com/trucks/pts4.htm
5. (Vehicle) TMM-6Bridge layers are a very under appreciated piece of equipment. It keeps an army moving and is essential for any armor unit. This capability is non-existent in PA presently. The TMM-6 is the cost effective version using the MZKT-7930 8x8 truck chassis , compared to the MTU-90 which is based on the T-90 tank chasiss.
[JSC TMM-6]http://weaponsystems.net/weaponsystem/CC06%20-%20TMM-6.html
[JSC TMM-6]http://www.janes.com/article/57586/russia-develops-tmm-6-bridge-system

So instead of MiG, Sukhois fighter jets, Mil-35 attack helicopters, massive SAM complexes, I submit to you an unsexy but still potentially transformative list of russian equipment.