I don't think these spawn in survival anymore they used to spawn in dungeons but @Jadedcat will know more as for quick teleportation I would suggest adding warp book (if it updated) as it would fit into the lite feel a little better seeing as you can't create dimensions that would be overly laggy on low end computer/servers which was what lite was intended to help in the first place
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To be honest, I had only few complains regarding FTBLite2, first was regarding massive liquid storage systems and its been fixed with new Bedrock drums with ~64k! buckets capacity with is 3x more than biggest Steel tank in other packs and with no lag whatsoever, second was in regards of Ender Quarry not being able to have Silk touch (which is really overcomesatory fixed in FTBL3 with lots of improvements and I really like that) and last one was regarding fast travel system as sometimes my Quarry was ~2k bloks away from my processing base, and even tho Gliders and Jetpacks helped a lot regarding these distances, I never ventured any further since it becomes annoying to travel this much using these primitive tools xDDD
Agriculture mod was also really fun for me since I could play with my friends while we are over Skype and act as Gordon Ramsay calling everyone wanker and hitting them if they overcook my diced potatoes xD
I miss that one only for it being fun to roleplay, too bad there is no 1.7.x update for it... maybe in final version it will be done