Allow me to add two useful timeline/tempo FRs:
(1) Fixed-spacing grid, irrespective of tempo
http://forum.cockos.com/project.php?issueid=2502
(2) Toggle follow/unfollow tempo map
http://forum.cockos.com/project.php?issueid=2385
Would be fantastic to have in R5 final, along with the bugfixes mentioned here.