Suggestion 1: Increase "Recently Played" to 10 maps. There are around 9 or 10 maps that account for almost all the play time. If this rule were to be implemented, some lesser played maps would get some actual playtime. As an example, if one of the following maps are in the vote, they will almost always be selected: ba_jail_electric_razor_go, ba_jail_electric_revamp_f1, jb_clouds_beta02, jb_lego_jail_2k17, jb_lego_jail_v8_final_sg_fix, jb_summer_jail_v1, jb_undertale_v1b, jb_vipinthemix_csgo_v1-1. As a personal example, when I started playing I only knew those 10 maps. Even after 40 hours on Jailbreak, I don't really know any other map.
Suggestion 2: Allow "Extend Map" to only be voted for once. If you count for all of the after time rounds that are played out in jailbreak, a normal map of jailbreak will be 20 minutes long. Since you can vote for "Extend Map" twice, a map of Jailbreak can last up to an hour. In my personal opinion that is way too long. 40 minutes on a single map is more than enough. This also ties in with my first suggestion. On a lot of those maps (Specifically the Electrics, Cloud, and VIP), Extend Map will be voted for twice.
TL;DR: I feel like Jailbreak is just the same few maps being repeated for like an hour each time. Switch it up!!!!